<h3>B. Prohibit further immigration is the correct answer </h3>
Explanation:
<em>The period from late 1800s and early 1900s was known as progressive era as people believed that the government should do more to protect them from powerful businesses. </em>
People from various walks of life came together to improve living conditions, limiting business houses and to make government work better, apart from these issues <em>progressives opposed immigration </em>and enacted various immigration restrictions during 1920s and forced the immigrants to adopt their moral beliefs. They used settlement houses to promote their beliefs, many progressives also joined Ku Klux Klan.